then you need to be sure that you have latest version of directX installed and vcredists (see here)and also latest updated video display driver from here that is much more optimized for aerofly RC 7 Ultimate. Anyway with directx update tool, you can fix DirectX function for aerofly RC 7 Ultimate.

Another problem is like this : Fatal Error: Direct3D driver returned error code (E_OUTOFMEMORY) while creating a texture. ? then you need to change your display driver because is old or have errors that need to be fixed.

Troubleshooting.

All right ! You have already directX updated to latest version, you have all microsoft vcredists installed and also you have latest display graphics driver installed and the error still occur ?

Uninstall your display driver again, but clean it with display driver cleaner this time !!